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What's Your Prius Sustainabiliy Index?

Discussion in 'Gen 2 Prius Fuel Economy' started by enerjazz, Mar 27, 2005.

  1. enerjazz

    enerjazz Energy+Jazz=EnerJazz

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    Most Prius owners are concerned about the consumption of gasoline and rightfully boast about high mileage numbers. But I've also noticed some folks who drive a lot of miles, which is counterproductive.

    I propose we calculate our Prius Sustainability Number to see who is really doing the best for the planet. Divide your miles/month by your lifetime mpg to get your number of gallons/month. Lowest number wins.

    My calc:
    9066 miles / 7.5 months = 1209 miles/mo
    Lifetime mpg = 51.9 mpg
    1209/51.9 = 23.3 gal/mo (88.2 liters/mo)

    I wish I had a shorter commute. Who is the Prius sustainable index winner? Post your numbers.
     
    #1 enerjazz, Mar 27, 2005
  2. TucsonPrius

    TucsonPrius Member

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    Putting on an average of nearly 50 miles a day gives me 29.02 gallons/month.

    Good metric.

    Thanks,
    Shawn
     
    #2 TucsonPrius, Mar 27, 2005
  3. bookrats

    bookrats New Member

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    Definitely an interesting metric -- I've plugged it into my PDA spreadsheet.

    Current value (after ~4.5 months) is 17.33 Gallons Per Month.
     
    #3 bookrats, Mar 27, 2005
  4. Ray Moore

    Ray Moore Active Member

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    My freind drives his F-250 with the big turbo diesel around 200 miles a month. That comes to about 13 gallons per month. He's got me beat.
     
    #4 Ray Moore, Mar 27, 2005
  5. prius04

    prius04 New Member

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    Here's a web site that has a calculator that will show what you will save over a non hybrid. You plug your old car in and your average MPG in the old thing, and then you pick which hybrid you want to get or already own. It not only gives you your gasoline and money savings, it also gives you how many pounds of CO2 you are saving by not putting them into the air.

    http://www.mixedpower.com/modules.php?name=Gas_Savings
     
    #5 prius04, Mar 27, 2005
  6. Tempus

    Tempus Senior Member

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    Well, this metric clearly shows that the most sustainable Prius Driver is a Dead Prius Driver.
     
    #6 Tempus, Mar 27, 2005
  7. bookrats

    bookrats New Member

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    :lolup:
     
    #7 bookrats, Mar 28, 2005
  8. sdgeiger

    sdgeiger Junior Member

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    That's funny, but it's true. Although I love my Prius, and my wife had wanted a Toyota RAV4 EV, the best that we can do without staying home all the time is to ride our bikes.
     
    #8 sdgeiger, Mar 28, 2005
  9. enerjazz

    enerjazz Energy+Jazz=EnerJazz

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    "Well, this metric clearly shows that the most sustainable Prius Driver is a Dead Prius Driver."

    Yes, but only if the dead driver is creamated.
    Taking up valuable land for a grave is not sustainable.

    From an emissions standpoint even high mileage (not high mpg) Prius drivers make out better, but from a basic oil consumption standpoint it comes down to how few gallons per month you use.
     
    #9 enerjazz, Mar 29, 2005
  10. TonyPSchaefer

    TonyPSchaefer Your Friendly Moderator
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    I'm nearing the end of a tank (450 miles @ 49.3MPG), but here are my figures as of last fill-up (03/06/05):

    192 days
    6.4 months
    177.43 gallons
    27.72344 gallons per month (approx)
     
    #10 TonyPSchaefer, Mar 29, 2005
  11. DaveinOlyWA

    DaveinOlyWA 3rd Time was Solariffic!!

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    hmm 257 days
    212 gallons.

    sooo that be 257 dvided by 30.5 = 8.42 months = 25.4 gallons a month.

    or since winter 170 days and 89.14 gallons = 16 gallons a month
     
    #11 DaveinOlyWA, Mar 29, 2005
  12. Tempus

    Tempus Senior Member

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    I believe we're looking at this backwards.

    Assuming that people aren't driving more than they have to.

    The best environmental scenario is the one where everyone who has to drive long distances drives a Prius.

    A Prius Driver with a 3 mile commute would help the environment most by trading vehicles with someone who commutes 100 Miles a day in a Suburban.
     
    #12 Tempus, Mar 29, 2005
  13. DaveinOlyWA

    DaveinOlyWA 3rd Time was Solariffic!!

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    Tempus;

    cents and sensibility, great combo!!
     
    #13 DaveinOlyWA, Mar 29, 2005
  14. hdrygas

    hdrygas New Member

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    Since I got the car August 13 I have put 216.146 gallons in the car as of March 15 so that is 7 months that would be 30.878 gallons per month. Avg mpg is now 50.546 mpg including the fill up on March 26 th. Total gallons as of the 26th is 223.4 gallons for 11292 miles. FWIW
     
    #14 hdrygas, Mar 29, 2005
  15. skruse

    skruse Senior Member

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    The Sustainability Index is a much better indicator than kmL-1 (kilometers per Liter) or mpg.

    7000 mi, 5.0 months of ownership
    Lifetime mpg = 52.0 7000 mi/5.0 months = 1400 mi per month
    1400 mi per month/52.0 mpg = 26.92 gallons per month

    My commute = 30 mi, Wife's commute = 50 mi. We now car pool together. So 26.92 gallons/2 people = 13.46 gallons per person per month.

    A Sustainability Index needs a factor for emissions.
     
    #15 skruse, Mar 29, 2005
  16. Tideland Prius

    Tideland Prius Moderator of the North
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    404.657 litres / 3.78 = 107.052 gal
    19th Mar - 25th Oct = 145 days (up to the last tank)

    22.15 gal/month (approx)
     
    #16 Tideland Prius, Mar 29, 2005
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